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Патент USA US3037382

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June' 5, 1962
A
R. J. HERZBERG
AIR GAUGE HAVING ADJUSTABLE BLADES
' Filed July 25, 1957
N
l
I
l
3,037,373
United States Patent() ” l-CC
3,037,373
Patented June 15, 11962
2
ln the drawings:
3,037,373
AIR GAUGE HAVING ADJUSTABLE BLADES
Roland J. Herzberg, Davenport, Iowa, assigner-»to
Ametek, Inc., a corporation -of Delaware
.Filed July 23,1957, Ser. No. 673,646
5`Claims. (Cl. 73-37.9)
Thìsinvention relates to air gauging systems or «the
like, andparticularly to the means for -adjusting the
measuring head andto the means for adjusting the. re
sistance or-iiice.
fin the past, no practical means .for .adjusting the posi
tion of the air orifices inthe measuring.' head relative to
the work being measured vhas beenfound. 'It has long
been.known that in order >to measure work in an air
gauge system and obtain a significant degree .of ac
curacy ’in the measurement, the 'distance between the
air oriiice on the measuring head and thework being
FIG. l is a schematic view of an air gauge system
containing certain of the features of the invention;
FIG. 2 is aside elevation in cross section ofthe novel
measuring head of the invention;
FIG. 3 is a top plan view of the operating portion
of the measuring head;
FIG. 4 is a View taken along Ithe line 4-«4 ofïFIG. 2
looking in the direction of the arrows;
FIG. `5 is a View taken »along the line 5---'5 of FIG-'2
looking in the direction of the arrows; 'and
FIG. 6 is a perspective view of one of ythe blades of
the measuring head.
As shown in FIG. l, the preferred »air gauging system
of the invention comprises a source of air’(»not shown),
a filter 1 for purifying the air, a pressure regulator 2,
a pressure gauge î3,'an adjustable restriction orilice 4,
a second pressure gauge V5, a measuringhead `'6 an'd an
air conduit 7 connecting all of the elements to allow
measured must be relatively small.
for
the ñow of air through the system. -The Vprovision
One of the objects of this invention is to make ,the 20
for an adjustable restriction oriñce `and anvadjustable
blades mounted in the measuring head movable radially
measuringhea-d in the same system allowsjfor a great
inwardly and outwardly to allow forthe useof'a` single
deal
of flexibility in the size of the workpieces which can
measuring head to measure a plurality of Workpieces
be measured by the system.
having 'different diameters.
The Measuring Heaid
Another factor which can aí’?e'ct'the accuracy of the
measuring device is the pressure Vof’ïthe .air through the
FIG. 2 will be used throughoutthis,descrip-tion to-.de
system. 4If the pressure is low and the distance between
-ñne the left and right ends‘of the measuring head.
the workpiece and the measuring .head is large, the
The measuring head '6fhas‘ a main tubular body >p_or
measurement obtained by an air gauge System will be
tion l() having slots `11 yin theleft-hand end. vMounted
practically useless.
30 within’the measuring head for longitudinal movement
Anotherobject of this invention, therefore, is the pro
relative thereto is a shaft 12 having an 4air bore '13
vision of _a novel adjustable restriction orifice which,
throughout4 most `of itsïlength. The shaft vincludes a
when utilized in conjunction with »the novelmeasu'ring
a tapered por-tion 12a at its left-hand end "which `is
head of this invention, will allow the use of the com
squared, and all of its faces at said end are taperedto
bined air gauge system of this invention with a plu 35 ward a point 14. Four blades 15 are mounted in the
rality of workpieces having a relatively large difference
slots 11. Thebase portion 16 of each ’ofthe blades is
in their diameters.
tapered upwardly from left to right, eXcept'for the ex
Still another object of -this invention is theprovision
treme left-hand portion which is substantially horizontal
of a restriction member which can be adjusted pre
and which is V-shaped, as best seen in FIG. 6, to allow
liminarily in accordance with the `pressure of the air 40 for proper nesting of the four ‘blades asseen in FIG.
entering the system and can >be further adjusted by
‘4. The squared tapered portion `12a of'the shaft mates
other means to compensate for >dilïerences in the> diam
fwithlall ofthe blades so that when the shaft is moved
eters of the workpieces to be measured.
'
to the left, all of the blades are moved outwardly1with
According to the invention, an air gauging system is
respect to the main body. The shaftíterminates prior
provided which comprises a source of air undervpres 45 to the point where the bladesfbecome V-shaped. r[he
sure, a pressure regulatonan .adjustable gauging mem
`air bore in the shaft is connected to air slots ï'17«in»two
ber, an adjustable restriction member interposed between
of the faces ofthe squared portion of the shaft. These
the pressure regulator and the gaugingrnembenindicat
slots `are elongated so as to always be in alignment with
ing means and conduit means connecting: the variousele
the air bores 18 in the corresponding blades regardless
50
ments of -the measuring device. The vnovel igauging
of’how far the lshaft is-moved‘ tothe left or'right. "The
outer surfaces of the twolblades 15 having the air bores
member of the invention comprises :a body member hav
ing slots in one end, a shaft mounted in the >body mem
are provided with notches V19 to allow for the escape
of air. `.The blades also .have their Aedges orends :15a
ber and having tapered portions at said end, a plurality
of tapered segments adapted to lit in the'slots, means 55 slanted inwardly toward the'outer surfaceof'the main
body so as to mate with `.the oppositely slanted peripheral
for holding the segmentsin contact‘with'thev shaft,~means
edgesor ends 20a and 21a respectively, of cap20`and
for moving the shaft longitudinallyl so as 'to cause all
sleeve 21. The cap is connected to the main1body=-by
ofthe segments to move'radially inwardly-and outward
screws 22 screwedinto threadedholes >23 in the main
ly in the slots and means for locking the segments in
body. .'Ihe sleeve is mounted on vthe outer surface of
their adjustedpositions. The novel restriction member 60 thefmain body and is movable‘therealong. ‘At‘the other
of the invention comprisesa iixe'd member wíth'inlet
end ofl the main body is` a blade .adjusting'nutï-24 thread
and outlet ports, a,plurality of -iiappers having different
ingly connected to the outer- surface of'the main body
physical .characteristics and .asupportingrneans forthe ' and having an inwardly direoting-'llange portion‘25which
4llappers which is movablerelativeito the ñXed mem
contacts the right-hand end 12b of shaft-12. -Lock nut
ber for selective positioning-of theflappers adjacent the 65 .126` is provided‘toV hold nut `24 in its adjustedposition. A
outletport in order `to `control the ñowwof .air torsaid
locking nut-27 is also-provided'to engage end.21'rb and
to hold sleeve-21 against blades v15 in their adjusted
port.
position. yThe measuring headis connected'to the’rest
These and other objects,.features andadvantages of
of ythe air gauge system by suitable connecting means
the invention will become apparent .from the 'following
`
`
detailed description and ¿drawings whichare ’merely ßex 70 designated generally as 2,8.
Tl1e>adjustment- of» theL blades of the measuring vheadv is
emplary.
3,037,373
3
-
as follows: Nut 27 is loosened allowing the blades 15 to
be freely movable radially in the slots 11. Then, as
suming that it is desired to move the blades outwardly
relative to the main body, lock nut 26 is loosened, nut 24
is turned toward the left, thereby moving shaft 12 toward
the left. The action of the tapered portion of the shaft
upon the tapered portion of the blades 15 forces the
blades outwardly and forwardly, but the forward move
ment of the blades is stopped by cap 20; therefore, the
blades move only outwardly. When the blades are in
their proper position, lock nut 26 is tightened against nut
in said slots having their base portions tapered in a direc
tion opposite to the taper of the tapered portions of said
shaft, said blades being slidable in said slots in a radial
direction relative to the main body, said blades having
their ends slanted inwardly from their base portion, said
body having an end portion slanted in substantial con
formity with one end of said blades, means for moving
the shaft longitudinally with respect to the main body so
as to move all of the blades simultaneously radially out
wardly in the slots, a sleeve mounted on the main body
and contacting all of the blades at one end thereof, the
24 and nut 27 is moved toward the left, so as to force
contacting portion of said sleeve being slanted in substan
sleeve 21 against the blades and lock the blades against
further outward movement due to the inward force exert
tial conformity to said one end of the blades, and means
to lock said sleeve in place against all of the blades so as
ed by the tapered peripheral edge of the sleeve and the
tapered peripheral edge of the cap against the oppositely
to lock all of the blades in their adjusted position.
4. A gauging member for use in a measuring device,
tapered ends of the blades. To move the blades inward
said gauging member being adjustable to correspond with
again, all of the nuts are loosened, the blades are shaken
the dimension of the work to be gauged and comprising a
or pushed into the desired position and the locking nuts
main tubular body having at least two slots at one end
26 and 27 are tightened.
20 thereof, a shaft mounted within the main body for longi
It is to be understood that details of construction can
tudinal sliding movement relative thereto, said shaft hav
be varied without departing from the spirit of the inven
ing portions tapered downwardly toward one end, the
tion, except as defined in the appended claims.
tapered portions of the shaft entering the slots in the
What is claimed is:
main body, at least two blades shaped to fit in said slots
l. A gauging member for use in a measuring device,
and having their base portions tapered in a direction op
said gauging member being adjustable to correspond with
posite to the taper of the tapered portions of said shaft,
the dimension of the work to be gauged and comprising
one of said blades being mounted in each of the slots and
a fixed tubular body member, a shaft mounted within
being slidable therein in a radial direction relative to the
said body member for longitudinal sliding movement
main body, said blades also having their ends slanted in
relative thereto, segmental parts mounted in said body 30 wardly from the base to the outer surface, a sleeve
member for sliding movement in a radial direction rela
mounted on said main body and contacting one end of
tive thereto, said segmental parts having their ends slant
each blade, the peripheral end of said sleeve which con
ed inwardly from their base portion, said body member
tacts the blades being slanted in substantial conformity
having an end portion slanted in substantial conformity
with the ends of the blades which it contacts, a cap iixedly
with one end of said segmental parts, means adjacent 35 connected to the main body at said one end and contact
said body member for urging said segmental parts at their
other end toward said body member end portion and into
contact with said shaft, said urging means being slanted
in substantial conformity to said other end, means on said
ing the other ends of the blades, the peripheral end of the
cap contacting the blades being slanted in substantial con
formity with the ends of the blades which it contacts so
that the blades are urged toward the bottoms of their slots
shaft for sliding all of said segmental parts outward in 40 by the inward force generated by the action of the slanted
said radial direction simultaneously, and means for actu
end of the cap and the slanted end of the sleeve upon the
ating said last named means, said urging means locking
slanted ends of the blades, a blade adjusting nut threaded
all of the segmental parts in their adjusted position.
to the main body and having ya peripheral flange which
2. A gauging member for use in a measuring device,
contacts the other end of said shaft in order to move the
said gauging member being adjustable to correspond with
shaft in response to the turning of the blade adjusting nut
the dimension of the work to be gauged and comprising 45 and thus move the blades simultaneously in said radial
a ñxed tubular body member having a plurality of slots
direction to the desired position, and a blade clamping
at one end thereof, a shaft mounted within said body
nut threaded to the main body and having its peripheral
member for longitudinal sliding movement relative there
portion contacting the other end of the sleeve so that it
to, said shaft having portions thereof tapered at one end
can force the sleeve against the blades and simultaneously
50
downwardly thereto, a plurality of »segments shaped to
lock the blades in the desired position between the sleeve
and the cap.
ñt in the slots in the body member and having their base
portions tapered oppositely to the taper of said end- of the
5. An air gauging member for use in a measuring de
shaft, said segments being slidable in a radial direction
vice, said gauging member being adjustable to correspond
relative to said body member in said slots, said segmental
with the dimension of the work to be gauged and com
parts having their ends slanted inwardly from their base 55 prising a main tubular body having at least two slots at
portion, said body member having Áan end portion slanted
one end thereof, a shaft mounted within the main body
in substantial conformity with one end of said segmental
for longitudinal sliding movement relative thereto, said
parts, means adjacent said body member for urging said
shaft having portions tapered downwardly toward one
segmental parts at their other end toward said body mem
end, the tapered portions of the shaft entering the slots
ber end portion and into contact with said shaft, said urg 60 in the main body, said tapered portion of the shaft having
ing means being slanted in substantial conformity to said
internal radial passages, said shaft having an axial inter
other end and means for moving-said shaft longitudinally
nal passage intersecting said radial passages, at least two
with respect to said body member so as to cause all of
blades shaped to ñt in said slots and having their base
ysaid segments to move radially outwardly in said slots
portions tapered in a direction opposite to the taper of
simultaneously, said urging means locking all of the seg 65 the tapered portions of said shaft, one of said blades
ments irr their adjusted positions.
being mounted in each of the slots and being slidable
3. A`gauging member for use in a measuring device,
therein in a radial direction relative to the main body,
said gauging member being adjustable to correspond with
the dimension of the work to be gauged and comprising
said blades containing radially disposed passages extend
ing from adjacent said internal radial passages of said
a main tubular body having a plurality of slots at one end 70 tapered portion of said shaft, said blades also having their
thereof, a shaft mounted Within said main body for longi
tudinal sliding movement relative thereto, said shaft hav
ing portions thereof tapered at one end downwardly
ends slanted inwardly from the base to the outer surface,
'a sleeve mounted on said main body and contacting one
end of each blade, the peripheral end of said sleeve which
contacts the blades being slanted in substantial conform
slots in said main body, a plurality of blades shaped to tit 75 ity with the ends of the blades which it contacts, a cap
thereto, the tapered portions of said shaft entering the
3,037,373
5
ñxedly connected to the main body `at said one end and
contacting the other ends of the blades, the peripheral
end of `the cap contacting the blades being slanted in sub
stantial conformity with the ends of the blades which it
contacts so that the blades are urged toward the bottoms
of their slots by «the inward force generated by the action
of the slanted end of the cap and the slanted end of the
sleeve upon the slanted ends of the blades, a blade adjust
ing nut threaded to the main body and having a periph
eral flange which contacts the other end of »said shaft in
order to move the shaft in response to the turning of the
blade adjusting nut yand Ithus move the blades simultane
6
and simultaneously lock the blades in the desired position
between the sleeve and the cap.
References Cited in the ñle of this patent
UNITED STATES PATENTS
1,595,368
1,819,144
2,105,198
2,219,504
2,352,836
2,594,077
2,718,140
ing its peripheral portion contacting the other end of the
sleeve so that it can force the sleeve against the blades
1926
1931
1938
1940
1944
1952
1955
FOREIGN PATENTS
'ously in said radial direction to the desired position, and
a blade clamping nut ythreaded to the main body and hav
Volis _______________ __ Aug. 10,
Aulenback __________ __ Aug. 18,
McNamara __________ .__ Ian. 11,
Willis ________________ __ Oct. 29,
Hertel _______________ __ July 4,
Schultze ____________ __ Apr. 22,
Aller _______________ __ Sept. 20,
32,046
554,054
655,838
Denmark ____________ __ July 30, 1923
Great Britain _________ __ June 17, 1943
Great Britain _________ __ Aug. 1, 1951
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